A variable speed drive is an automation component that controls and regulates the speed and rotational force, or torque output, of an electric motor. Variable speed drives change the way mechanical movement-oriented processes such as packaging, material handling, material working and hoisting are managed. Control of mechanical movements relies heavily on drive technologies with the ability to start and stop motors rapidly, with sufficient fluxing and motor current, and with the ability to repeat tasks during a given process. Precise control of mechanical movements utilising variable speed drives helps to increase efficiency, connectivity, repeatability and maintenance.
Motor controllers and drives are electrical devices that regulate the outputs of motors in terms of speed, torque, and position. To obtain the desired output, the variable speed drives change the power input to the motor. Motor control devices can be operated either manually, automatically, or even remotely.